It isn't a "conspiracy" when one person cooks a study.
The title of the paper was "NASA faked the moon landing--Therefore (Climate) Science is a Hoax:
An Anatomy of the Motivated Rejection of Science"
There were ten people in that study out of 1,145 who thought the moon landing was a hoax. Out of that ten, three thought that global warming was a hoax.
Statistics isn't my strong suit in math. Maybe somebody else can work that out.